This film basically got the story just about right, it also mentioned Louis Goudsmit and the ALSOS group....
Day One (1989 film) - Wikipedia
Day One is a made-for-TV documentary-drama movie about The Manhattan Project, the research and development of the atomic bomb during World War II. It is based on the book by Peter Wyden. The movie was written by David W. Rintels and directed by Joseph Sargent. It starred Brian Dennehy as General Leslie Groves, David Strathairn as Dr. J. Robert Oppenheimer and Michael Tucker as Dr. Leo Szilard. It premiered in the United States on March 5, 1989...
Get this also, you'll also see why I suggest it....
Second reprint of this great story of scientific espionage (original, 1947, reprinted 1983). Goudsmit ran the Alsos Mission following All...
Read this, you'll soon perceive why, promise, OK?
Richard Feynman (1918-1988) was an American theoretical physicist who received the Nobel Prize in 1965.